STUDY OF CHARM PHOTOPRODUCTION MECHANISMS

Authors
ALVAREZ MP BARATE R BLOCH D BONAMY P BORGEAUD P BURCHELL M BURMEISTER H BRUNET JM CALVINO F CATTANEO M CRESPO JM DALMAGNE B DAVID M DICIACCIO L DRUET P DUANE A ENGEL JP FERRER A FILIPPAS TA FOKITIS E FORTY RW FOUCAULT P GAZIS EN GERBER JP GIOMATARIS Y HALL G HOFMOKL T KATSOUFIS EC KORATZINOS M KRAFFT C LEFIEVRE B LEMOIGNE Y LOPEZ A LUI WK MAGNEVILLE C MALTEZOS A MCEWEN JG PAPADOPOULOU T PATTISON B POUTOT D PRIMOUT M RAHMANI H ROUDEAU P SEEZ C SIX J STRUB R TREILLE D TRISCOS P TRISTRAM G VILLET G VOLTE A WAYNE M WEBSDALE DM WORMSER G ZOLNIEROWSKI Y
Citation
Mp. Alvarez et al., STUDY OF CHARM PHOTOPRODUCTION MECHANISMS, Zeitschrift fur Physik. C, Particles and fields, 60(1), 1993, pp. 53-62
Citations number
27
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
60
Issue
1
Year of publication
1993
Pages
53 - 62
Database
ISI
SICI code
0170-9739(1993)60:1<53:SOCPM>2.0.ZU;2-K
Abstract
This paper presents results on charm photoproduction in the energy int erval 40 to 160 GeV, obtained from the high-statistics charm samples o f the NA 14/2 experiment at CERN. We measure the charm cross-section, the distributions in x(F) and p(T)2 and various production ratios and charge asymmetries. The total non-diffractive open-charm cross-section per nucleon is measured to be sigma(gammaN-->ccXBAR) = 540 +/- 60 +/- 100 nb at [E(gamma)] = 100 GeV. We discuss the photoproduction of cha rm in terms of theoretical and phenomenological models. We compare the measured p(T)2 and x(F) distributions with first-order QCD calculatio ns of photon-gluon fusion and obtain a value for the charm-quark mass of m(c) = 1.5(+0.2/-0.1) GeV/c2.